Billboard Hot 100 55th Anniversary : The All-Time Top 100 Songs

Source: When Billboard introduced weekly music charts in 1940, there were sales charts and there were airplay charts. These separate charts measuring the popularity of singles continued going their separate ways until Aug. 4, 1958, when Billboard introduced the first chart that blended sales and airplay data. Named the “Hot 100,“ it has continued to this day, known around the world for being the definitive U.S. singles weekly re